The nature of the finite temperature QCD transition as a function of the quark masses
The nature of the finite temperature QCD transition as a function of the quark masses
复制标题
DOI：
10.22323/1.042.0182
复制
发表时间：
2007-10
期刊：
影响因子：
--
通讯作者：
G. Endrődi;Z. Fodor;S. Katz;K. Szabó
中科院分区：
文献类型：
--
作者：
G. Endrődi;Z. Fodor;S. Katz;K. Szabó
物理夸克质量的有限温度QCD跃迁是一个交叉。对于较小的夸克质量，预计会发生一阶相变。使用赛门铁克改进规范和stout改进费米子作用对2+1味交错QCD，我们给出了分离一阶区域和交叉区域的相位线的估计/边界。计算是在两种不同的晶格间隔上进行的。我们的结论是，对于$N_T=4$的临界质量为$m_0 \lesssim 0.07 \cdot m_{phys}$，对于$N_T=6$的临界质量为$m_0 \lesssim 0.12 \cdot m_{phys}$。
The finite temperature QCD transition for physical quark masses is a crossover. For smaller quark masses a first-order phase transition is expected. Using Symanzik improved gauge and stout improved fermion action for 2+1 flavour staggered QCD we give estimates/bounds for the phase line separating the first-order region from the crossover one. The calculations are carried out on two different lattice spacings. Our conclusion for the critical mass is $m_0 \lesssim 0.07 \cdot m_{phys}$ for $N_T=4$ and $m_0 \lesssim 0.12 \cdot m_{phys}$ for $N_T=6$ lattices.